Semi-ring for a putter head



FIG. 1 is a bottom plan view thereof;

FIG. 2 is a top plan view thereof;

FIG. 3 is a top perspective view thereof;

FIG. 4 is a rear view thereof; and,

FIG. 5 is a toe side view thereof. 

The ornamental design for a semi-ring for a putter head, as shown and described. 